German dredger Simson built at Haarlem, Netherlands according to the Dutch newspaper Rotterdamsch Nieuwsblad dated 20 July 1911

An item dated IJmuiden 19 July reported that the dredger Simson build by the yard Conrad at Haarlem on behalf of the Kölnische Tiefban Gesellschaft yesterday evening left for Hamburg towed by the Dutch tug Oostzee.